[Android] [0.68.0] Cannot find symbols for new architecture upgrade

[Mingyang-Li]

New Version

0.68.0

Old Version

0.65.1

Build Target(s)

Android - Pixel 4 (API 32)

Output of react-native info

System:
OS: Windows 10 10.0.19042
CPU: (6) x64 Intel(R) Core(TM) i5-9400F CPU @ 2.90GHz
Memory: 18.33 GB / 31.94 GB
Binaries:
Node: 16.14.0 - C:\Program Files\nodejs\node.EXE
Yarn: 3.1.1 - ~\AppData\Roaming\npm\yarn.CMD
npm: 8.3.1 - C:\Program Files\nodejs\npm.CMD
Watchman: Not Found
SDKs:
Android SDK: Not Found
Windows SDK:
AllowAllTrustedApps: Disabled
IDEs:
Android Studio: Version 2021.1.0.0 AI-211.7628.21.2111.8193401
Visual Studio: 17.0.31912.275 (Visual Studio Community 2022)
Languages:
Java: 1.8.0_312
npmPackages:
@react-native-community/cli: Not Found
react: 17.0.2 => 17.0.2
react-native: 0.68.0 => 0.68.0
react-native-windows: Not Found
npmGlobalPackages:
react-native: Not Found

Issue and Reproduction Steps

Issue: Cannot find symbol BuildConfig
Places issues detected:
File android\app\src\main\java\com\rndiffapp\MainApplication.java

1. import com.rndiffapp.newarchitecture.components.MainComponentsRegistry;
2. return BuildConfig.DEBUG;
3. if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED)

Steps tried to debug:

1. Adding import com.rndiffapp.BuildConfig; for this file

Issue: Cannot find symbol MainComponentsRegistry
File android\app\src\main\java\com\rndiffapp\newarchitecture\MainApplicationReactNativeHost.java

1. return new MainApplicationTurboModuleManagerDelegate.Builder();
2. MainComponentsRegistry.register(componentFactory);

Steps tried to debug:

1. Adding import com.rndiffapp.newarchitecture.components.MainComponentsRegistry; to top of file
2. Addeding import com.rndiffapp.newarchitecture.modules.MainApplicationTurboModuleManagerDelegate; to top of file

Steps to reproduce:

1. Follow upgrade guide on https://react-native-community.github.io/upgrade-helper/?from=0.65.1&to=0.68.0
2. Keep updating files from the top all the way till android/app/src/main/java/com/rndiffapp/MainApplication.java
3. Open Android studio
4. Start running any virtual device
5. run yarn android or npm run react-native

[RalissonMattias]

Try adding this to imports in MainApplication.java

• Add import com.facebook.react.BuildConfig;

Note: where is rndiffapp should be exchanged for the corresponding one of your project. If you've already done this, just ignore it.

[finnp]

I've run into the same issue when running react-native upgrade. Suggestion with BuildConfig didn't help and also wasn't really found here: https://react-native-community.github.io/upgrade-helper/?from=0.67.2&to=0.68.1

[finnp]

In my case react native upgrade had failed to upgrade android/app/build.gradle. Not sure why, but adding these missing changes resolved the issues. However I realize that my issue wasn't the symbol BuildConfig. It was the IS_NEW_ARCHITECTURE_ENABLED symbol as this line was missing:

buildConfigField "boolean", "IS_NEW_ARCHITECTURE_ENABLED", isNewArchitectureEnabled().toString()

[Mingyang-Li]

@finnp Ummm I'm gonna give your trick a try - will let you know

[swrobel]

@finnp where'd you get this from and where does it go? I don't see buildConfigField in any of my app's files (or anywhere in RNDiffApp for that matter)

buildConfigField "boolean", "IS_NEW_ARCHITECTURE_ENABLED", isNewArchitectureEnabled().toString()

[cortinico]

As @finnp and @swrobel already mentioned, the issue is that you bumped your RN version to 0.68 without using react-native upgrade or the Upgrade Helper:
https://react-native-community.github.io/upgrade-helper/?from=0.65.1&to=0.68.1

You need to edit your build.gradle file to add a buildConfigField for "IS_NEW_ARCHITECTURE_ENABLED", otherwise it won't be possible to know at runtime if the New Architecture is enabled or not.

Closing as this looks resolved, feel free to reopen if this is not the case.

[leotm]

the diff can b a bit... iffy at times 😅 here's what we want

https://react-native-community.github.io/upgrade-helper/?from=0.65.1&to=0.69.0-rc.0

to enable

• TurboModules (via MainApplication.java)
• Fabric (via MainActivity.java)

from gradle.properties when

• newArchEnabled=true

if that helps clarify @swrobel

[piscespieces]

I don't understand.

Getting this same error out of nowhere, because I was already working with RN 68.1. I was able to run the Android app and to generate AAB and APK files. With all the stuff that gets auto generated it's imposible for me to say when and where this started happening.

Solutions stated above are somewhat obscure

buildConfigField "boolean", "IS_NEW_ARCHITECTURE_ENABLED", isNewArchitectureEnabled().toString()

What is this? Where would you place it? Is there a code snippet to point you exactly WHERE AND HOW?

Why is this issue closed? I haven't found a clear solution yet, neither @swrobel seems yo have gotten a response back...